Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Debt issuance costs	$ 1,818	$ 2,753
Voting Common Stock [Member]
Common stock, par value (in USD per share)	$ 0.10	$ 0.10
Common stock, shares authorized (shares)	12,500,000	12,500,000
Common stock, shares issued (shares)	2,905,757	2,905,757
Common stock, shares outstanding (shares)	2,905,757	2,905,757
Non-Voting Common Stock [Member]
Common stock, par value (in USD per share)	$ 0.10	$ 0.10
Common stock, shares authorized (shares)	37,500,000	37,500,000
Common stock, shares issued (shares)	12,893,895	12,779,646
Common stock, shares outstanding (shares)	12,893,895	12,779,646