Long-Term Debt and Related Matters (Tables)

12 Months Ended

Dec. 31, 2016

Long-Term Debt and Related Matters [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

		2016		2015
Revolving credit facility with an interest rate of 4.22% at December 31, 2016 and 2.10% at December 31, 2015.	$	127,073	$	165,000
Term loan payable in quarterly installments through January 1, 2020 with an interest rate of 3.92% at December 31, 2016		30,000		-
Financing agreement payable in installments through July 1, 2017 with an interest rate of 3.00% at December 31, 2016		534		1,247
Lease obligations payable in installments through 2019 with a  weighted average interest rate of 3.10% at December 31, 2016 and 3.09% December 31, 2015		1,958		2,507
Total		159,565		168,754
Less current maturities		10,386		1,335
Long-term portion	$	149,179	$	167,419

Schedule of Maturities of Long-term Debt [Table Text Block]

		December 31, 2016
2017	$	10,386
2018		9,820
2019		9,734
2020		129,625
2021		-
2022 and thereafter		-
Total	$	159,565