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Leases (Tables)

12 Months Ended

Dec. 31, 2017

Leases [Abstract]

Schedule of rent expense and sublease income

Rent expense is recognized over the expected term of the lease, including renewal option periods, if applicable, on a straight-line basis. Rent expense and sublease income were as follows for the years ended December 31:

		2017				2016				2015
Rent expense		$	1,074,437			$	1,150,614			$	978,591
Sublease income		$	573,494			$	646,235			$	550,452

Schedule of future minimum lease payments for operating leases

Future minimum lease payments under noncancelable operating leases (with initial or remaining lease terms in excess of one year) are as follows:

Year ending December 31:
2018		$	980,657
2019		959,902
2020		980,720
2021		1,001,603
2022 and thereafter		916,477
Total future minimum lease payments		$	4,839,359

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- Definition

Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717

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