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Net (Loss) Income per Share Attributable to Common Stock - Stock Options and Restricted Stock (Details) - shares	3 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2014
Weighted Average
Anti-dilutive Securities Excluded from Calculation of Earnings Per Share
Weighted average number of securities excluded from calculation	226,839	756,527	552,577	195,480
Restricted stock
Anti-dilutive Securities Excluded from Calculation of Earnings Per Share
Weighted average participating restricted stock included in common stock outstanding		87,000
Restricted stock | Weighted Average
Anti-dilutive Securities Excluded from Calculation of Earnings Per Share
Weighted average participating restricted stock included in common stock outstanding	182,160			182,160
Unvested stock options | Weighted Average
Anti-dilutive Securities Excluded from Calculation of Earnings Per Share
Weighted average number of securities excluded from calculation	160,434	411,763	425,981	162,107
Restricted stock units | Weighted Average
Anti-dilutive Securities Excluded from Calculation of Earnings Per Share
Weighted average number of securities excluded from calculation	66,405	268,461	126,596	33,373
Non-participating restricted stock awards | Weighted Average
Anti-dilutive Securities Excluded from Calculation of Earnings Per Share
Weighted average number of securities excluded from calculation		76,303

X

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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