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Per Share Data (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Restricted stock units			294,118
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average	1,038,071	1,541,472	1,050,202	1,625,254
Stock-Settled Stock Appreciation Rights
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average	160,939	360,031	161,662	360,031
Restricted Stock Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average	1,473,155	1,332,817	1,472,581	1,320,211
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average	2,690,950	2,690,950	2,690,950	2,690,950

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Restricted Stock Units have been vested but not converted into common stock

+ References

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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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