Stock-Based Compensation - Recognized Financial Statements for Stock Options, Stock Appreciation Rights, and Restricted Stock (Detail) - USD ($)	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Total Cost of Share-Based Plans Charged Against Income Before Tax Effect	$ 2,072,982	$ 75,352
Income Tax Expense Recognized in Income	$ (163,353)	$ (29,067)

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration