Condensed Consolidated Statements of Changes in Redeemable Convertible Preferred Stock and Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total		Convertible Series A Preferred Stock [Member]	Series B Redeemable Convertible Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	(Accumulated deficit) retained earnings [Member]
Beginning Balance at Dec. 31, 2015	$ 9,778				$ 2	$ 107,757	$ (97,981)
Beginning Balance, Shares at Dec. 31, 2015			1,000,000		206,168,035
Preferred Stock Beginning Balance, Shares at Dec. 31, 2015				600,000
Preferred Stock Value, Beginning Balance at Dec. 31, 2015				$ 502,213
Net income (loss)	201,700						201,700
Redeemable convertible series B preferred stock dividends	(18,000)			$ (18,000)			(18,000)
Issuance of common stock under restricted stock compensation arrangement, Shares					212,765
Equity-based compensation	658					658
Ending Balance at Dec. 31, 2016	194,136	[1]			$ 2	108,415	85,719
Ending Balance, Shares at Dec. 31, 2016			1,000,000		206,380,800
Preferred Stock Ending Balance ,Shares at Dec. 31, 2016				600,000
Preferred Stock Value, Ending Balance at Dec. 31, 2016				$ 502,213
Net income (loss)	(3,535)						(3,535)
Redeemable convertible series B preferred stock dividends	(9,000)			$ (9,000)			(9,000)
Issuance of common stock under restricted stock compensation arrangement, Shares					333,332
Equity-based compensation	313					313
Ending Balance at Jun. 30, 2017	$ 181,914				$ 2	$ 108,728	$ 73,184
Ending Balance, Shares at Jun. 30, 2017			1,000,000		206,714,132
Preferred Stock Ending Balance ,Shares at Jun. 30, 2017				600,000
Preferred Stock Value, Ending Balance at Jun. 30, 2017				$ 502,213

[1] Balances derived from audited financial statements as of December 31, 2016.