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Equity Incentive Plans - Company's Equity Incentive Plans (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
	Apr. 13, 2015	Jun. 30, 2015	Jun. 30, 2014
Equity Incentive Plans [Line Items]
Share based compensation		$ 1,407	$ 1,903
Total unrecognised compensation cost relating to restricted share awards		1,884
Total unrecognised compensation cost relating to non-vested share option		$ 704
Weighted average remaining term for non-vested restricted share awards		9 months 13 days
Weighted average remaining term for non-vested share option awards		4 years 9 months 13 days
Equity Incentive Plan 2015
Equity Incentive Plans [Line Items]
Grant date fair value	$ 3.55
Shares reserved for issuance	1,400,000
Employee Stock Option
Equity Incentive Plans [Line Items]
Option exercise price	$ 5.5
Fair value assumptions - Expected term	5 years
Fair value assumptions - Expected volatility rate	59.274%
Fair value assumptions - Risk free interest rate	1.30%

X

- Definition

The fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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Aggregate number of common shares reserved for future issuance.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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