Equipment and Improvements (Tables)

12 Months Ended

Dec. 31, 2018

Property Plant And Equipment [Abstract]

Summary of Equipment and Improvements

Equipment and improvements consist of the following (in thousands):

	December 31,
	2018			2017
Computer hardware, software, and equipment	$	14,683		$	14,617
Leasehold improvements		5,316			5,316
Office furniture and fixtures		962			962
		20,961			20,895
Less accumulated depreciation and amortization		(20,096	)		(19,666	)
Equipment and improvements, net	$	865		$	1,229