Consolidated Statement of Changes in Stockholders' Equity - USD ($) $ in Thousands		Total	Common Stock [Member]	Preferred Stock [Member]	Capital in Excess of Par [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]	Investment Company Accounting [Member]	Investment Company Accounting [Member] Accumulated Undistributed Net Investment Loss [Member]	Investment Company Accounting [Member] Accumulated Undistributed Net Realized Gains on Investments [Member]	Investment Company Accounting [Member] Net Unrealized Appreciation on Investment Net of Tax [Member]	Bank Holding Company Accounting [Member]	Bank Holding Company Accounting [Member] Retained Earnings [Member]	Bank Holding Company Accounting [Member] Accumulated Other Comprehensive Income [Member]	Bank Holding Company Accounting [Member] Parent [Member]
Balance at Dec. 31, 2015		$ 278,088
Net loss								$ 23,515
Forfeiture of restricted stock, net, shares								37,202
Ending balance at Dec. 31, 2016		286,096
Ending balance, shares at Dec. 31, 2016								24,024,821
Net loss								$ 278
Forfeiture of restricted stock, net, shares								318,263
Ending balance at Dec. 31, 2017		287,159	$ 273		$ 273,716	$ (24,919)		$ 287,159	$ (65,592)		$ 103,681				$ 287,159
Ending balance, shares at Dec. 31, 2017			27,294,327			(2,951,243)		24,343,084
Net increase(decrease) in net assets resulting from operations		(14,874)							(38,299)		23,425				(14,874)
Net loss		(14,874)
Stock based compensation		152	$ 1		151										152
Forfeiture of restricted stock, net		0	$ 0	$ 0	0	$ 0	$ 0		0	$ 0	0		$ 0	$ 0	0
Forfeiture of restricted stock, net, shares			95,726
Ending balance at Mar. 31, 2018		272,437	$ 274		273,867	$ (24,919)			(103,891)		127,106				272,437
Ending balance, shares at Mar. 31, 2018			27,390,053			(2,951,243)
Balance at Dec. 31, 2017		287,159	$ 273		273,716	$ (24,919)		$ 287,159	(65,592)		103,681				287,159
Balance, shares at Dec. 31, 2017			27,294,327			(2,951,243)		24,343,084
Net loss	[1],[2]	(22,739)
Ending balance at Dec. 31, 2018		290,204	$ 274		274,292	$ (24,919)	27,596					$ 290,204	13,043	(82)	262,608
Ending balance, shares at Dec. 31, 2018			27,385,600			(2,951,243)						24,434,357
Balance at Mar. 31, 2018		272,437	$ 274		273,867	$ (24,919)			(103,891)		127,106				272,437
Balance, shares at Mar. 31, 2018			27,390,053			(2,951,243)
Net loss		(7,865)					2,307						(10,172)		(10,172)
Distributions to non-controlling interest		(1,776)					(1,776)
Stock based compensation		425			425										425
Forfeiture of restricted stock, net		0	$ 0	$ 0	0	$ 0	0		0	$ 0	0		0	0	0
Forfeiture of restricted stock, net, shares			(4,453,000)
Net change in unrealized losses on investments, net of tax		(82)												(82)	(82)
Ending balance at Dec. 31, 2018		290,204	$ 274		274,292	$ (24,919)	27,596					$ 290,204	13,043	$ (82)	262,608
Ending balance, shares at Dec. 31, 2018			27,385,600			(2,951,243)						24,434,357
Adoption of Bank Holding Company Accounting									$ 103,891		$ (127,106)		23,215
Balance after adoption of Bank Holding Company Accounting		$ 299,502	$ 274		$ 273,867	$ (24,919)	$ 27,065						$ 23,215		$ 272,437

[1] Balance includes the nine months ended December 31, 2018 under Bank Holding Company Accounting and the three months ended March 31, 2018 under Investment Company Accounting.

[2] Balance includes the nine months ended December 31, 2018 under Bank Holding Company Accounting and three months ended March 31, 2018 under Investment Company Accounting.