Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Financial Data

The following table presents certain unaudited quarterly financial information for the years ended December 31, 2014 and 2013 (in thousands of U.S. dollars except per share data). This information reflects all normal recurring adjustments, which are, in the opinion of management, necessary for a fair statement of the results of the interim periods. Net income per common share has been retroactively adjusted to reflect the 1 for 4.86 reverse share split effected on October 1, 2014.

	Three Months Ended
	March 31, 2014		June 30, 2014			September 30, 2014 (1)		December 31, 2014
Revenue	$	5,001	$	5,298		$	13,193	$	4,878
Income from operations		1,032		1,378			8,661		35
Net income attributable to common shareholders		—		—			3,595		1,224
Basic net income per common share	$	—	$	—		$	2.67	$	0.14
Diluted net income per common share	$	—	$	—		$	1.69	$	0.13
	Three Months Ended
	March 31, 2013		June 30, 2013			September 30, 2013		December 31, 2013
Revenue	$	5,385	$	5,600		$	10,788	$	5,583
Income (loss) from operations		1,944		(770	)		6,519		2,019
Net income attributable to common shareholders		—		—			1,319		2,514
Basic net income per common share	$	—	$	—		$	0.99	$	1.87
Diluted net income per common share	$	—	$	—		$	0.63	$	1.17

(1) The financial data, including per share amounts, for all interim periods prior to and including the three month period

                      ended September 30, 2014, do not reflect the IPO.