XML 73 R60.htm IDEA: XBRL DOCUMENT v3.8.0.1
Reconciliation of Federal Statutory Rate to Effective Income Tax Rate (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Tax Rate Reconciliation [Line Items]                      
Income before income taxes $ 1,549 $ (2,022) $ 3,654 $ 4,067 $ 1,566 $ 2,214 $ 5,372 $ 2,540 $ 7,248 $ 11,692 $ 13,423
Expected tax at statutory rate                 2,537 3,975 4,564
Adjustments due to:                      
Difference between U.S. and foreign tax                 (1,797) (2,031) (1,910)
State income and franchise taxes                 (307) (326) 563
Business tax credits                 (7,708) (236) (115)
Stock compensation                 (946) 31 348
Transaction costs                 1,232 156  
Other                 470 380 (230)
Change in U.S. federal tax rates                 (12,839)    
Transition tax                 3,266    
Change in valuation allowance                 (12,164) (1,981) 1,216
Other                 (151) 43 (358)
Provision for income taxes $ (10,629) $ (6,691) $ (4,784) $ 999 $ (3,463) $ 1,059 $ 1,500 $ 915 $ (21,105) $ 11 $ 4,078
Expected tax at statutory rate                 35.00% 34.00% 34.00%
Adjustments due to:                      
Difference between U.S. and foreign tax                 (24.80%) (17.40%) (14.20%)
State income and franchise taxes                 (4.20%) (2.80%) 4.20%
Business tax credits                 (9.80%) (2.00%) (0.90%)
Stock compensation                 (13.10%) 0.30% 2.60%
Transaction costs                 17.00% 1.30%  
Other                 6.40% 3.20% (1.70%)
Change in U.S. federal tax rates                 (177.20%)    
Transition tax                 45.10%    
Change in valuation allowance                 (167.80%) (16.90%) 9.10%
Other                 (2.10%) 0.40% (2.70%)
Provision for income taxes                 (291.20%) 0.10% 30.40%