Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2016

Fair Value Measurements [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

		Fair Value Measurements at Reporting Date Using								Fair Value Measurements at Reporting Date Using
		June 30, 2016		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		December 31, 2015		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Term deposits	$	3,016	$	3,016	$	-	$	-	$	1,939	$	1,939	$	-	$	-
Total assets	$	3,016	$	3,016	$	-	$	-	$	1,939	$	1,939	$	-	$	-
Interest rate swaps	$	2,532	$	-	$	2,532	$	-	$	196	$	-	$	196	$	-
Total liabilities	$	2,532	$	-	$	2,532	$	-	$	196	$	-	$	196	$	-