Condensed Consolidated Balance Sheets - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 16,393,569	$ 13,433,828
Accounts receivable, less allowance for doubtful accounts of $2,010,721 in 2018 and $1,583,576 in 2019	41,376,141	52,417,152
Prepaid expenses	4,712,482	3,134,756
Other current assets	4,498,979	1,960,032
Total current assets	66,981,171	70,945,768
Property and equipment, net	57,025,461	57,078,452
Operating lease right-of-use assets	37,352,430
Finance lease right-of-use assets	668,943	675,194
FCC broadcasting licenses	516,735,554	516,735,554
Goodwill	25,377,447	25,377,447
Other intangibles, net	2,778,761	2,823,178
Other assets	12,385,207	7,449,486
Total assets	719,304,974	681,085,079
Current liabilities:
Accounts payable	8,345,514	9,611,151
Operating lease liabilities	6,376,473
Finance lease liabilities	67,906	67,101
Other current liabilities	18,359,299	19,181,108
Total current liabilities	33,149,192	28,859,360
Due to related parties	638,151	662,329
Long-term debt, net of unamortized debt issuance costs	240,760,503	242,776,520
Operating lease liabilities	35,457,040
Finance lease liabilities	482,172	499,753
Deferred tax liabilities	123,364,689	122,912,545
Other long-term liabilities	9,652,248	10,340,481
Total liabilities	443,503,995	406,050,988
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized; none issued
Additional paid-in capital	151,720,149	149,963,252
Treasury stock, Class A common stock; 4,426,027 shares in 2018; 4,431,006 shares in 2019	(30,467,423)	(30,447,597)
Retained earnings	154,428,070	155,398,555
Accumulated other comprehensive income	87,885	87,885
Total stockholders' equity	275,800,979	275,034,091
Total liabilities and stockholders' equity	719,304,974	681,085,079
Class A Common Stock [Member]
Stockholders' equity:
Common stock	15,636	15,334
Class B Common Stock [Member]
Stockholders' equity:
Common stock	$ 16,662	$ 16,662

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682