Debt (Tables)

12 Months Ended

Dec. 31, 2014

Debt [Abstract]

Schedule of Debt [Table Text Block]

		December 31,
		2014		2013
Industrial development authority monthly 5.60% fixed rate demand bond maturing 2018	$	5,000	$	5,000
Industrial development authority monthly 5.26% fixed rate demand bond maturing 2028		10,000		10,000
Credit facilities (1.16% weighted average borrowing rate at December 31, 2014)		58,421		0
Ohio Department of Development term loan (see below)		2,109		2,428
Other debt obligations (including capital leases)		201		1,288
		75,731		18,716
Short-term debt		0		(945)
Current portion of long-term debt		(403)		(450)
	$	75,328	$	17,321

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

2015	$	403
2016		395
2017		396
2018		63,765
2019		350
2020 and beyond	$	10,422