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Other Current Liabilities (Details) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Summary of other current liabilities    
Accrued payroll expenses $ 2,345,175 $ 1,914,674
Deferred rent 1,274,726 1,186,843
Deferred revenue 912,733 1,044,064
Barter sales payable 1,015,248 1,013,911
Deferred program rights 129,167 840,373
Other accrued expenses 2,302,926 1,294,321
Other current liabilities $ 7,979,975 $ 7,294,186