Credit Facilities and Long-Term Debt - Summary of Outstanding Long-Term Debt Balances (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Summary of outstanding long-term debt balances
Total notes payable	$ 40,263,061us-gaap_NotesPayable	$ 43,700,742us-gaap_NotesPayable
Less: current portion	542,201us-gaap_NotesPayableCurrent	3,502,190us-gaap_NotesPayableCurrent
Notes payable, less current portion	39,720,860us-gaap_LongTermNotesPayable	40,198,552us-gaap_LongTermNotesPayable
Vehicle & Equipment Financing Loans [Member]
Summary of outstanding long-term debt balances
Total notes payable	64,509	2,190
LIBOR Plus 1.75 to 2.25%, Bank of America Amortizing Term Loan, Due April 1, 2017 [Member]
Summary of outstanding long-term debt balances
Total notes payable	8,875,000	9,375,000
6.16%, Allstate/ CUNA Senior Unsecured Notes, Due June 29, 2017 [Member]
Summary of outstanding long-term debt balances
Total notes payable	13,000,000	13,000,000
5.38%, Sun Life Fixed Rate Note, Due June 1, 2017 [Member]
Summary of outstanding long-term debt balances
Total notes payable	15,334,000	15,334,000
LIBOR Plus 3.85%, Sun Life Floating Rate Note, Due May 3, 2014 [Member]
Summary of outstanding long-term debt balances
Total notes payable	0	3,000,000
4.15% Sun Life Senior Secured Guaranteed Note, Due June 1, 2017 [Member]
Summary of outstanding long-term debt balances
Total notes payable	$ 2,989,552	$ 2,989,552

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Carrying value as of the balance sheet date of notes payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-Section S99

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-Subparagraph (SX 210.5-02.19,20)

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