Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation - Summary of Valuation Data (Detail)

v3.6.0.2
Share-Based Compensation - Summary of Valuation Data (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total stock-based compensation expense $ 674 $ 339 $ 280
2009 Long-Term Incentive Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted-average fair value (per share) $ 4.92 $ 1.86 $ 2.98
Total stock-based compensation expense $ 674 $ 339 $ 280
Total income tax impact on provision $ 551 $ 281 $ 313