Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Class A 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)
Shares issued pursuant to stock-based compensation plan (in shares)		139,178
Shares issued pursuant to stock-based compensation plan	(601)			(601)
Retirement of class B common stock	(10)			(10)
Payment-in-kind dividends (in shares)			7,816
Stock-based compensation	119			119
Net loss	19,348				19,348
Ending balance (in shares) at Dec. 31, 2018		24,645,825	91,784
Ending balance at Dec. 31, 2018	$ 222,547	$ 142,655		174,379	(94,487)
Shares issued pursuant to stock-based compensation plan (in shares)	299,769
Payment-in-kind dividends (in shares)			8,544
Stock-based compensation	$ 1,359			1,359
Net loss	(103,019)				(103,019)
Ending balance (in shares) at Dec. 31, 2019		24,945,594	100,328
Ending balance at Dec. 31, 2019	$ 120,887	$ 142,655		$ 175,738	$ (197,506)