Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 58,193	$ 3,280
Due from charterers, net	4,412	945
Prepaid expenses and other current assets	4,085	2,892
Total current assets	66,690	7,117
Noncurrent assets:
Vessels, net of accumulated depreciation of $52,459 and $36,906, respectively	486,069	355,418
Deposits on vessels	1,013	0
Deferred drydock, net of accumulated amortization of $0 and $0, respectively	108	0
Fixed assets, net of accumulated depreciation of $47 and $36, respectively	678	12
Deferred financing costs, net of accumulated amortization of $1,785 and $1,204, respectively	2,809	1,823
Total noncurrent assets	490,677	357,253
Total assets	557,367	364,370
Current liabilities:
Accounts payable and accrued expenses	3,782	2,163
Deferred revenue	409	261
Due to Parent	198	34
Current portion of long-term debt	4,250	0
Total current liabilities	8,639	2,458
Noncurrent liabilities:
Long-term debt	163,625	101,250
Total noncurrent liabilities:	163,625	101,250
Total liabilities	172,264	103,708
Commitments and contingencies
Shareholders' equity:
Additional paid-in capital	412,736	277,249
Accumulated deficit	(28,209)	(16,817)
Total shareholders' equity	385,103	260,662
Total liabilities and shareholders' equity	557,367	364,370
Common Stock [Member]
Shareholders' equity:
Common stock	512	173
Class B Stock [Member]
Shareholders' equity:
Common stock	$ 64	$ 57