Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Details)

v3.8.0.1
Income Taxes - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2009
Mar. 31, 2018
Mar. 31, 2017
Valuation Allowance [Line Items]              
Income tax provision (benefit)           $ (1,864) $ 2,021
Unrecognized Tax Benefits, Period Increase (Decrease)           700  
Unrecognized Tax Benefits, Interest on Income Taxes Accrued           800  
Unrecognized Tax Benefits, Income Tax Penalties Accrued           $ 170  
State and Local Jurisdiction [Member]              
Valuation Allowance [Line Items]              
Open Tax Year       2012      
Income Tax Examination, Year under Examination 2015 2014          
Foreign Tax Authority [Member]              
Valuation Allowance [Line Items]              
Open Tax Year         2009    
Domestic Tax Authority [Member]              
Valuation Allowance [Line Items]              
Open Tax Year     2013        
Minimum [Member]              
Valuation Allowance [Line Items]              
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent           21.00%  
Maximum [Member]              
Valuation Allowance [Line Items]              
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent           35.00%