Consolidated Statements of Changes In Net Assets - USD ($)		3 Months Ended	6 Months Ended	12 Months Ended
		Jun. 30, 2017	Jun. 30, 2017	Dec. 31, 2017
Net decrease in net assets resulting from operations		$ (4,797,000)	$ (3,686,000)
Capital share activity
Exercise of stock options	[1]			0
Investment Company Accounting [Member]
Net investment loss after income taxes		(1,293,000)	(1,728,000)
Net realized gains on investments, net of tax		1,996,000	2,841,000
Net unrealized depreciation on investments, net of tax		(5,500,000)	(4,799,000)
Net decrease in net assets resulting from operations		(4,797)	(3,686)
Investment income, net		0
Return of capital		0	0
Realized gains from investment transactions, net		0
Distributions to shareholders(1)	[2]	0	0
Stock-based compensation expense		201,000	329,000
Exercise of stock options		0	0
Capital share transactions		201,000	329,000
Total decrease in net assets		(4,596,000)	(3,357,000)
Net assets at the beginning of the period		287,335,000	286,096,000	$ 286,096,000
Net assets at the end of the period(2)	[3]	$ 282,739,000	$ 282,739,000
Capital share activity
Capital share activity Common stock issued, beginning of period		27,076,016	26,976,064	26,976,064
Exercise of stock options		0	0
Issuance of restricted stock, net		151,275	251,227
Common stock issued, end of period		27,227,291	27,227,291	27,294,327
Treasury stock, beginning of period		(2,951,243)	(2,951,243)	(2,951,243)
Treasury stock acquired		0	0
Treasury stock, end of period		(2,951,243)	(2,951,243)	(2,951,243)
Common stock outstanding		24,276,048	24,276,048	24,438,084

[1] The aggregate intrinsic value, which represents the difference between the price of the Company's common stock at the exercise date and the related exercise price of the underlying options, was $0 and $0 for the 2018 and 2017 second quarter and six months.

[2] Distributions declared were $0.00 and $0.00 per share for the three and six months ended June 30, 2017.

[3] Includes $0 of undistributed net investment income, $0 of undistributed net realized gains on investments, and $375 of capital loss carryforwards at June 30, 2017.