Intangible Assets Other Than Goodwill (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Intangible assets are as follows (in thousands, except for weighted useful lives):

		December 31, 2017							December 31, 2018
	Weighted Useful Lives	Gross Carrying Amount		Accumulated Amortization			Net Amount		Gross Carrying Amount		Accumulated Amortization			Net Amount
	(Years)
Amortized Intangible Assets:
Licenses	5.81	$	20,130	$	(18,620	)	$	1,510	$	20,130	$	(19,383	)	$	747
Product lines	10.36	33,858		(13,178		)	20,680		33,858		(17,293		)	16,565
Customer relationships	4.90	3,152		(3,152		)	—		3,152		(3,152		)	—
Trade names	5.00	3,000		(3,000		)	—		3,000		(3,000		)	—
Non-compete agreements	5.00	200		(200		)	—		200		(200		)	—
Total amortized intangible assets		$	60,340	$	(38,150	)	$	22,190	$	60,340	$	(43,028	)	$	17,312
Unamortized Intangible Assets:
Trademarks		$	300	$	—		$	300	$	300	$	—		$	300

Future Amortization Expenses

The Company currently estimates continuing future amortization expense to be approximately (in thousands):

2019	$	4,747
2020	4,284
2021	4,141
2022	4,140
	$	17,312