Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity Shareholders' Equity (Schedule of Accumulated Other Comprehensive Income(Loss)) (Details)

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Shareholders' Equity Shareholders' Equity (Schedule of Accumulated Other Comprehensive Income(Loss)) (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Abstract]        
Accumulated other comprehensive income as of January 1,     $ 127 $ 354
Other comprehensive loss before reclassifications $ (2,111) $ (838)    
Amounts reclassified from accumulated other comprehensive income (loss) to interest expense in the consolidated statements of operations 954 885    
Income tax benefit (expense) 437 (13)    
Other comprehensive income (loss), net of tax (720) 34    
Accumulated other comprehensive (loss) income $ (593) $ 388 $ 127