Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 61,917	$ 3,280
Due from charterers, net of a reserve of $70 and $154, respectively	3,967	945
Prepaid expenses and other current assets	3,316	2,892
Total current assets	69,200	7,117
Noncurrent assets:
Vessels, net of accumulated depreciation of $48,069 and $36,906, respectively	385,771	355,418
Fixed assets, net of accumulated depreciation of $44 and $36, respectively	195	12
Deferred financing costs, net of accumulated amortization of $1,615 and $1,204, respectively	2,231	1,823
Total noncurrent assets	388,197	357,253
Total assets	457,397	364,370
Current liabilities:
Accounts payable and accrued expenses	2,693	2,163
Deferred revenue	228	261
Due to Parent	102	34
Current portion of long-term debt	1,500	0
Total current liabilities	4,523	2,458
Noncurrent liabilities:
Long-term debt	122,750	101,250
Total noncurrent liabilities:	122,750	101,250
Total liabilities	127,273	103,708
Commitments and contingencies
Shareholders' equity:
Additional paid-in capital	358,483	277,249
Accumulated deficit	(28,796)	(16,817)
Total shareholders' equity	330,124	260,662
Total liabilities and shareholders' equity	457,397	364,370
Common Stock [Member]
Shareholders' equity:
Common stock	376	173
Class B Stock [Member]
Shareholders' equity:
Common stock	$ 61	$ 57