Note 5 - Stockholders' Equity (Details Textual) $ / shares in Units, $ in Thousands		3 Months Ended
	Jan. 02, 2019 $ / shares shares	Mar. 31, 2020 USD ($) $ / shares shares	Mar. 31, 2019 USD ($)	Dec. 31, 2019 shares	Nov. 05, 2019 USD ($)
Capital Units, Authorized (in shares)		245,000,000
Common Stock, Shares Authorized (in shares)		200,000,000		200,000,000
Preferred Stock, Shares Authorized (in shares)		20,000,000
Common Stock, Voting Rights, Votes Per Share		1
Dividends, Common Stock, Total | $		$ 0	$ 0
Treasury Stock, Value, Acquired, Cost Method | $		$ 6,000
Common Stock, Capital Shares Reserved for Future Issuance (in shares)		5,262,386		6,130,944
Repurchase Authorization 2019 [Member]
Stock Repurchase Program, Authorized Amount | $					$ 150,000
Treasury Stock, Shares, Acquired (in shares)		500,923
Treasury Stock Acquired, Average Cost Per Share (in dollars per share) | $ / shares		$ 11.39
Treasury Stock, Value, Acquired, Cost Method | $		$ 6,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $		$ 123,000
Raycom [Member] | Common Stock [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)	11,500,000
Shares Issued, Price Per Share (in dollars per share) | $ / shares	$ 14.74
Common Class A [Member]
Common Stock, Shares Authorized (in shares)		25,000,000		25,000,000
Common Stock, Voting Rights, Votes Per Share		10
Common Stock, Capital Shares Reserved for Future Issuance (in shares)		1,336,440		1,503,254