Annual report pursuant to Section 13 and 15(d)

Segment Reporting and Geographic Information - Revenues and Income from Operations for Reportable Segments (Detail)

v3.8.0.1
Segment Reporting and Geographic Information - Revenues and Income from Operations for Reportable Segments (Detail) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 30, 2017
Sep. 30, 2017
Jul. 01, 2017
Apr. 01, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 30, 2017
Dec. 31, 2016
Dec. 31, 2015
Revenues                      
Total revenues $ 206,374 $ 218,955 $ 224,260 $ 188,779 $ 186,876 $ 211,528 $ 226,900 $ 189,604 $ 838,368 $ 814,908 $ 786,911
Segment Income (Loss) from Operations                      
Total segment income (loss) from operations $ 1,399 $ 13,984 $ 18,502 $ 3,100 $ 2,769 $ 15,770 $ 20,025 $ 2,951 36,985 41,515 27,398
UNITED STATES                      
Revenues                      
Total revenues                 693,599 677,526 645,658
Segment Income (Loss) from Operations                      
Total segment income (loss) from operations                 32,583 42,148 33,438
CANADA                      
Revenues                      
Total revenues                 137,800 130,255 133,152
Segment Income (Loss) from Operations                      
Total segment income (loss) from operations                 2,881 932 (5,436)
OTHER [Domain]                      
Revenues                      
Total revenues                 6,969 7,127 8,101
Segment Income (Loss) from Operations                      
Total segment income (loss) from operations                 $ 1,521 $ (1,565) $ (604)