Quarterly report pursuant to Section 13 or 15(d)

Income Tax Benefit (Expense) - Additional Information (Detail Textuals)

v2.4.1.9
Income Tax Benefit (Expense) - Additional Information (Detail Textuals) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Income Tax Disclosure [Abstract]      
Income tax expense, net $ 677,000us-gaap_IncomeTaxExpenseBenefit $ (9,387,000)us-gaap_IncomeTaxExpenseBenefit  
Benefit for non-recurring benefit associated     $ 6,700,000us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit