Unaudited Condensed Consolidated Statement of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Class A Voting Common Stock	Series A-1 Preferred Stock	Additional Paid-in Capital	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2017		24,506,647	83,968
Beginning balance at Dec. 31, 2017	$ 203,690	$ 142,655		$ 174,871	$ (113,836)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Payment-in-kind dividends (in shares)			1,889
Issued pursuant to stock based compensation plan (in shares)		127,666
Issued pursuant to stock-based compensation plan	(610)
Stock-based compensation	216			216
Net loss	(16,536)				(16,536)
Ending balance (in shares) at Mar. 31, 2018		24,634,313	85,857
Ending balance at Mar. 31, 2018	186,760	$ 142,655		174,477	(130,372)
Beginning balance (in shares) at Dec. 31, 2018		24,645,825	91,784
Beginning balance at Dec. 31, 2018	222,547	$ 142,655		174,379	(94,487)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Payment-in-kind dividends (in shares)			2,065
Issued pursuant to stock based compensation plan (in shares)		127,818
Stock-based compensation	627			627
Net loss	(58,564)				(58,564)
Ending balance (in shares) at Mar. 31, 2019		24,773,643	93,849
Ending balance at Mar. 31, 2019	$ 164,610	$ 142,655		$ 175,006	$ (153,051)