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Derivatives and Hedging - Additional Information (Detail)
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12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 12 Months Ended | ||||||||||
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Dec. 31, 2013
USD ($)
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Dec. 31, 2013
2010 Swap [Member]
USD ($)
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Dec. 31, 2012
2010 Swap [Member]
USD ($)
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Dec. 31, 2011
2010 Swap [Member]
USD ($)
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Jun. 24, 2010
2010 Swap [Member]
USD ($)
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May 20, 2013
2013 Rate Cap No. 1 [Member]
USD ($)
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Dec. 31, 2013
2013 Rate Cap No. 1 [Member]
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May 20, 2013
2013 Rate Cap No. 2 [Member]
USD ($)
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Dec. 31, 2013
2013 Rate Cap No. 2 [Member]
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Apr. 20, 2012
2012 Metal Swap No. 1 [Member]
USD ($)
MT
|
Dec. 31, 2013
2012 Metal Swap No. 1 [Member]
USD ($)
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Dec. 31, 2012
2012 Metal Swap No. 1 [Member]
USD ($)
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May 30, 2012
2012 Metal Swap No. 2 [Member]
USD ($)
MT
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Dec. 31, 2013
2012 Metal Swap No. 2 [Member]
USD ($)
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Dec. 31, 2012
2012 Metal Swap No. 2 [Member]
USD ($)
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May 30, 2012
2012 Metal Swap No. 3 [Member]
USD ($)
MT
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Dec. 31, 2013
2012 Metal Swap No. 3 [Member]
USD ($)
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Dec. 31, 2012
2012 Metal Swap No. 3 [Member]
USD ($)
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Dec. 18, 2012
2012 FX Contract [Member]
CAD
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Dec. 31, 2012
2012 FX Contract [Member]
USD ($)
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Dec. 31, 2013
2013 FX Contracts [Member]
USD ($)
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Dec. 31, 2013
2013 FX Contracts [Member]
CAD
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Dec. 31, 2013
2013 FX Contracts [Member]
Minimum [Member]
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Dec. 31, 2013
2013 FX Contracts [Member]
Maximum [Member]
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| Derivative [Line Items] | ||||||||||||||||||||||||
| Term of derivative instrument | 2 years | |||||||||||||||||||||||
| Notional amount of derivative instrument | $ 115,000,000 | $ 150,000,000 | $ 75,000,000 | $ 294,700 | $ 0 | $ 77,900 | $ 0 | $ 272,500 | $ 0 | 105,000,000 | 42,050,000 | |||||||||||||
| Interest rate of derivative instrument | 2.47% | |||||||||||||||||||||||
| Effective date of agreement | May 31, 2011 | May 28, 2013 | May 28, 2013 | |||||||||||||||||||||
| Termination date of derivative | May 31, 2013 | May 28, 2015 | May 28, 2015 | Dec. 31, 2012 | Dec. 31, 2012 | Mar. 31, 2013 | May 21, 2013 | Jul. 31, 2013 | Dec. 31, 2014 | |||||||||||||||
| Unrealized gain (loss) on derivative | 643,000 | |||||||||||||||||||||||
| Fair value of interest expense | 418,000 | 787,000 | 284,000 | |||||||||||||||||||||
| Fair value of derivative liability | 0 | (418,000) | (6,000) | (6,000) | (1,475,000) | (42,000) | ||||||||||||||||||
| Term of derivative instrument | 2 years | 2 years | 8 months | 7 months | 10 months | 6 months | ||||||||||||||||||
| LIBOR interest rate | 1.25% | 1.25% | ||||||||||||||||||||||
| Fair value of interest rate caps | 53,000 | |||||||||||||||||||||||
| Unrealized loss recognized on derivatives | 81,000 | |||||||||||||||||||||||
| Quantity of derivative instrument | 35 | 10 | 35 | |||||||||||||||||||||
| Price of copper | 8.420 | 7.790 | 7.785 | |||||||||||||||||||||
| Fair value of derivative asset | 17,000 | |||||||||||||||||||||||
| Forward exchange rate | 0.99890 | 1.02940 | 1.08210 | |||||||||||||||||||||
| Increase in other expense | $ 1,138,000 | $ 42,000 | ||||||||||||||||||||||