17. Parent Company Financial Statements (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Selling, general and administrative expenses	$ 3,332	$ 2,972	$ 3,449	$ 2,842	$ 3,197	$ 3,879	$ 3,984	$ 4,215	$ 12,595	$ 15,275	$ 11,613
Operating income (loss)	(997)us-gaap_OperatingIncomeLoss	4,642us-gaap_OperatingIncomeLoss	7,763us-gaap_OperatingIncomeLoss	12,682us-gaap_OperatingIncomeLoss	7,992us-gaap_OperatingIncomeLoss	(958)us-gaap_OperatingIncomeLoss	(357)us-gaap_OperatingIncomeLoss	(4,197)us-gaap_OperatingIncomeLoss	24,090us-gaap_OperatingIncomeLoss	2,480us-gaap_OperatingIncomeLoss	(21,160)us-gaap_OperatingIncomeLoss
Other income (expense)
Interest expense	(2,315)us-gaap_InterestExpense	(2,287)us-gaap_InterestExpense	(2,530)us-gaap_InterestExpense	(2,920)us-gaap_InterestExpense	(3,291)us-gaap_InterestExpense	(2,933)us-gaap_InterestExpense	(2,913)us-gaap_InterestExpense	(2,671)us-gaap_InterestExpense	(10,052)us-gaap_InterestExpense	(11,808)us-gaap_InterestExpense
Other income (expense)	249us-gaap_OtherNonoperatingIncomeExpense	81us-gaap_OtherNonoperatingIncomeExpense	110us-gaap_OtherNonoperatingIncomeExpense	164us-gaap_OtherNonoperatingIncomeExpense	613us-gaap_OtherNonoperatingIncomeExpense	35us-gaap_OtherNonoperatingIncomeExpense	(67)us-gaap_OtherNonoperatingIncomeExpense	163us-gaap_OtherNonoperatingIncomeExpense	604us-gaap_OtherNonoperatingIncomeExpense	744us-gaap_OtherNonoperatingIncomeExpense	(162)us-gaap_OtherNonoperatingIncomeExpense
Income (loss) before income taxes	(3,740)	464	2,722	7,693	3,258	(8,289)	(9,592)	(9,808)	7,139	(24,431)	(5,363)
Income tax expense	0us-gaap_IncomeTaxExpenseBenefit	0us-gaap_IncomeTaxExpenseBenefit	0us-gaap_IncomeTaxExpenseBenefit	(6)us-gaap_IncomeTaxExpenseBenefit	0us-gaap_IncomeTaxExpenseBenefit	0us-gaap_IncomeTaxExpenseBenefit	0us-gaap_IncomeTaxExpenseBenefit	(6)us-gaap_IncomeTaxExpenseBenefit	(6)us-gaap_IncomeTaxExpenseBenefit	(6)us-gaap_IncomeTaxExpenseBenefit	1,081us-gaap_IncomeTaxExpenseBenefit
Other comprehensive loss
Foreign currency translation adjustment	(56)	(98)	0	108	78	(275)	(600)	199	(46)	(598)	(75)
Comprehensive income (loss)	(3,796)us-gaap_ComprehensiveIncomeNetOfTax	366us-gaap_ComprehensiveIncomeNetOfTax	2,722us-gaap_ComprehensiveIncomeNetOfTax	7,795us-gaap_ComprehensiveIncomeNetOfTax	3,336us-gaap_ComprehensiveIncomeNetOfTax	(8,564)us-gaap_ComprehensiveIncomeNetOfTax	(10,192)us-gaap_ComprehensiveIncomeNetOfTax	(9,615)us-gaap_ComprehensiveIncomeNetOfTax	7,087us-gaap_ComprehensiveIncomeNetOfTax	(25,035)us-gaap_ComprehensiveIncomeNetOfTax	(4,357)us-gaap_ComprehensiveIncomeNetOfTax
Parent Company Financial Statements
Equity in subsidiary gains (losses)									11,123	(22,134)	(12)
Selling, general and administrative expenses									3,942	2,687	2,303
Operating income (loss)									7,181	(24,821)	(2,315)
Other income (expense)
Interest expense									(277)	(187)	(1,866)
Other income (expense)									235	577	(97)
Income (loss) before income taxes									7,139	(24,431)	(4,278)
Income tax expense									(6)	(6)	(4)
Net gain (loss)									7,133	(24,437)	(4,282)
Other comprehensive loss
Foreign currency translation adjustment									(46)	(598)	(75)
Comprehensive income (loss)									$ 7,087	$ (25,035)	$ (4,357)

Total gross loss

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