Derivative (Tables)

9 Months Ended

Sep. 30, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

				September 30, 2015		September 30, 2015
				Notional Amount		Fair Value (a)
Derivatives designated as hedging instruments under ASC 815		Balance sheet classification		(in thousands)
Interest rate swaps		Other liabilities-non current	$	10,500	$	(56)
				December 31, 2014		December 31, 2014
				Notional Amount		Fair Value (a)
Derivatives designated as hedging instruments under ASC 815		Balance sheet classification		(in thousands)
Interest rate swaps		Other liabilities-non current	$	13,500	$	(18)
	(a) See Note 16 for the fair value measurements related to these financial instruments.

Schedule of Cash Flow Hedges Included in AOCI [Table Text Block]

Derivatives in Hedging Relationships	Amount of gain or (loss) recognized in OCI on derivative (effective portion)
	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2015		2014		2015		2014
	(in thousands)
Interest rate swaps	$	(39)	$	23	$	(110)	$	(57)

Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]

Details about AOCI Components	Amount reclassified from AOCI into income (effective portion)								Location of amount
	Three Months Ended				Nine Months Ended				reclassified from
	September 30,				September 30,				AOCI into income
	2015		2014		2015		2014		(effective portion)
	(in thousands)
Interest rate swaps	$	22	$	31	$	72	$	100	Interest expense