CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Allowance for doubtful accounts	$ 259	$ 245
Leases, allowance for doubtful accounts	$ 40	$ 40
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,500,000	2,500,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Traditional Common Stock
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	10,250,000	10,250,000
Common stock, shares issued	0	0
Common stock, shares outstanding	0	0
Public Common Stock
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	10,250,000	10,250,000
Common stock, shares issued	7,746,602	7,675,692
Common stock, shares outstanding	7,746,602	7,675,692