Quarterly Financial Data (unaudited) (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data

	First			Second			Third			Fourth
2017
Total revenues	$	12,007		$	13,416		$	15,052		$	14,040
Gross profit		5,788			7,800			6,529			6,932
Net loss		(4,736	)		(2,840	)		(5,453	)		(3,714	)
Net loss per common share (1)		(0.03	)		(0.02	)		(0.03	)		(0.02	)
Weighted average shares		155,215,040			155,926,149			156,400,702			156,654,843
2016
Total revenues	$	12,319		$	12,228		$	13,479		$	14,196
Gross profit		5,543			4,910			5,445			7,507
Net loss		(7,656	)		(6,061	)		(6,121	)		(4,500	)
Net loss per common share (1)		(0.05	)		(0.04	)		(0.04	)		(0.03	)
Weighted average shares		154,858,079			154,936,096			155,060,811			155,111,435

⁽¹⁾ Net loss per common share is computed based upon the weighted average number of shares outstanding during each period. Basic and diluted loss per share amounts are identical as the effect of potential common shares is anti-dilutive.