XML 110 R95.htm IDEA: XBRL DOCUMENT v3.3.1.900
Income Taxes - Additional Information (Detail)
$ in Thousands
 8 Months Ended 12 Months Ended
Dec. 31, 2014
USD ($)
Dec. 31, 2015
USD ($)
Audit
Apr. 30, 2013
USD ($)
Apr. 30, 2014
USD ($)
Jan. 18, 2011
USD ($)
Income Taxes [Line Items]          
Income tax settlement amount   $ 180 $ 800    
Tax paid for income tax settlement   168 430    
Interest paid for income tax settlement   $ 12 $ 370    
Aggregate finance asserting liability total         $ 3,852
Taxation payable         2,220
Penalties and interest payable         $ 1,632
Potential cumulative liability     8.00%    
Number of audits initiated | Audit   0      
Net operating loss carryforwards   $ 72,873      
Net operating loss carryforwards expiry period   2032 through 2033      
State net operating loss carryforwards expiry period   $ 86,351      
Net operating loss carryforwards benefit recorded additional paid-in capital   383      
Alternative minimum tax credit carryforwards $ 3,457 3,766   $ 3,330  
General business tax credit carryforwards 2,921 $ 3,379   2,666  
General business tax credit carryforwards expiration date   2023 through 2035      
Valuation allowance 2,581 $ 5,886      
Settlements   (168)      
Unrecognized tax benefit net of federal benefit on state issue 0 279   0  
Unrecognized tax benefits   270      
Uncertain tax positions, accrued interest 143 92 $ 76 116  
Uncertain tax positions, penalties 8 8 9 8  
Accrued income tax expense $ 26 $ (51) 41 $ 40  
Business Acquisition [Member]          
Income Taxes [Line Items]          
Increase (decrease) in valuation allowance     $ 5,084    
State [Member]          
Income Taxes [Line Items]          
Net operating loss carryforwards expiry period   2016 through 2035