Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Disaggregation of Revenue

The following table disaggregates revenue by major sources:

	YEAR ENDED
	DECEMBER 31
Major Goods/Service Lines	2018		2017 (1)
Consolidated operations - long-term contracts	$	117,869	$	92,008
Royalty	17,506		12,770
Total revenues	$	135,375	$	104,778
Timing of Revenue Recognition
Goods transferred at a point in time	$	78,849	$	60,594
Services transferred over time	56,526		44,184
Total revenues	$	135,375	$	104,778

⁽¹⁾ As noted above, prior period amounts have not been adjusted under the modified retrospective method.

Contract Balances

The opening and closing balances of the Company’s current and long-term contract liability, and receivables are as follows:

	Contract balances
	Trade accounts receivable, net		Contract liability (current)			Contract liability (long-term)
Balance, January 1, 2018	$	14,611	$	860		$	1,766
Balance, December 31, 2018	20,817		754			2,008
Increase (decrease)	$	6,206	$	(106	)	$	242