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Stock-Based Compensation - Summary of Deferred Compensation Expense Recognition (Details) - Restricted Stock Units (RSUs)	Dec. 31, 2016 USD ($)
Expense recognition of deferred compensation
2017	$ 6,152,255
2018	4,353,599
2019	3,617,145
2020	2,087,404
2021	662,735
Thereafter	854,968
Total	$ 17,728,106

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ 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 (i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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