Outstanding Debt (Parenthetical) (Detail) (USD $)	6 Months Ended
	Jun. 30, 2012
Term note dated March 27, 2012
Line of Credit Facility [Line Items]
Issurance date	Mar. 27, 2012
Debt, face amount	$ 430,000
Monthly principal and interest payments	8,445
Interest rate percentage	6.66%
Maturity date	Apr. 15, 2017
Term note dated May 11, 2012
Line of Credit Facility [Line Items]
Issurance date	May 11, 2012
Debt, face amount	3,000,000
Monthly principal and interest payments	50,000
Interest rate percentage	6.50%
Maturity date	Jun. 01, 2017
Term note dated May 11, 2012 | Prime Rate
Line of Credit Facility [Line Items]
Basis spread percentage above LIBOR or prime rate	3.00%
Term note dated May 11, 2012 | LIBOR
Line of Credit Facility [Line Items]
LIBOR floor rate percentage	2.00%
Basis spread percentage above LIBOR or prime rate	4.50%
Line of credit for working capital
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	1,000,000
Issurance date	May 11, 2012
Interest rate percentage	6.50%
Maturity date	Jun. 01, 2017
Line of credit for working capital | Prime Rate
Line of Credit Facility [Line Items]
Basis spread percentage above LIBOR or prime rate	3.00%
Line of credit for working capital | LIBOR
Line of Credit Facility [Line Items]
LIBOR floor rate percentage	2.00%
Basis spread percentage above LIBOR or prime rate	4.50%
Line of credit for capital expenditures
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 500,000
Issurance date	May 11, 2012
Interest rate percentage	6.50%
Maturity date	Jun. 01, 2017
Debt instrument, conversion to term note date	Jun. 01, 2013
Line of credit for capital expenditures | Prime Rate
Line of Credit Facility [Line Items]
Basis spread percentage above LIBOR or prime rate	3.00%
Line of credit for capital expenditures | LIBOR
Line of Credit Facility [Line Items]
LIBOR floor rate percentage	2.00%
Basis spread percentage above LIBOR or prime rate	4.50%