SHAREHOLDER'S EQUITY (Details) - USD ($) |
1 Months Ended | 3 Months Ended | 12 Months Ended | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 15, 2017 |
Nov. 17, 2017 |
Sep. 15, 2017 |
Aug. 30, 2017 |
Jun. 15, 2017 |
Mar. 15, 2017 |
Dec. 15, 2016 |
Sep. 15, 2016 |
Jun. 15, 2016 |
Dec. 31, 2017 |
Oct. 16, 2017 |
Sep. 30, 2017 |
Jul. 16, 2017 |
Jun. 30, 2017 |
Apr. 16, 2017 |
Mar. 31, 2017 |
Jan. 16, 2017 |
Dec. 31, 2016 |
Oct. 16, 2016 |
Sep. 30, 2016 |
Jul. 16, 2016 |
Jun. 30, 2016 |
Apr. 16, 2016 |
Mar. 31, 2016 |
Jan. 16, 2016 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Conversion Of Class B Common Stock [Abstract] | ||||||||||||||||||||||||||||
| Conversion of Class B common stock to Class A common stock (Share) | 3,152,333 | |||||||||||||||||||||||||||
| Dividends And Shares Activitiy [Line Items] | ||||||||||||||||||||||||||||
| Dvidend Equivalent liability - short term | $ 830,000 | $ 260,000 | $ 830,000 | $ 260,000 | ||||||||||||||||||||||||
| Dvidend Equivalent liability - long term | 1,331,000 | 348,000 | 1,331,000 | 348,000 | ||||||||||||||||||||||||
| Total Dividend Equivalent Liability | $ 2,161,000 | 608,000 | $ 2,161,000 | $ 608,000 | ||||||||||||||||||||||||
| CommonStockDividendsPerShareDeclared | $ 0.09 | $ 0.075 | $ 0.2 | $ 0.075 | $ 0.075 | $ 0.075 | $ 0.075 | $ 0.075 | $ 0.36 | $ 0.3 | ||||||||||||||||||
| Dividend payments | $ 12,633,039 | $ 2,921,727 | $ 7,791,075 | $ 2,920,860 | $ 2,915,952 | $ 2,891,608 | $ 2,886,179 | $ 2,885,838 | $ 29,296,000 | $ 8,666,000 | $ 0 | |||||||||||||||||
| Shares of stock deemed repurchased | 169,000 | 232,000 | 132,000 | |||||||||||||||||||||||||
| Amount recorded as financing activity | $ (2,565,000) | $ (2,268,000) | $ (1,562,000) | |||||||||||||||||||||||||
| The total cost to repurchase | (10,675,000) | 0 | 0 | |||||||||||||||||||||||||
| Dividends paid on preferred stock | $ 236,806 | $ 687,500 | $ 550,000 | $ 550,000 | $ 550,000 | $ 550,000 | $ 412,500 | $ 412,500 | $ 412,500 | $ 2,574,000 | 1,788,000 | 752,000 | ||||||||||||||||
| Employee stock purchase plan, authorized shares | 1,000,000 | 1,000,000 | ||||||||||||||||||||||||||
| Stock Issued During Period Value Employee Stock Purchase Plan | $ 182,000 | 379,000 | 0 | |||||||||||||||||||||||||
| Total Non cash compensation expense recognized | $ 6,239,000 | 4,218,000 | 3,488,000 | |||||||||||||||||||||||||
| Espp Shares Market Value | 85.00% | 85.00% | ||||||||||||||||||||||||||
| Espp Share Discount | 15.00% | 15.00% | ||||||||||||||||||||||||||
| PreferredStockDividendsPerShareDeclared | $ 21,527.78 | $ 62,500 | $ 50,000 | $ 50,000 | $ 50,000 | $ 50,000 | $ 37,500 | $ 37,500 | $ 37,500 | |||||||||||||||||||
| PaymentsOfDividendsAbstract | ||||||||||||||||||||||||||||
| Payments of Dividends, Common Stock | $ 12,633,039 | $ 2,921,727 | $ 7,791,075 | $ 2,920,860 | $ 2,915,952 | $ 2,891,608 | $ 2,886,179 | $ 2,885,838 | $ 29,296,000 | 8,666,000 | 0 | |||||||||||||||||
| PaymentsOfDividendsPreferredStockAndPreferenceStock | $ 924,000 | $ 550,000 | $ 550,000 | $ 550,000 | $ 550,000 | $ 413,000 | $ 413,000 | $ 412,000 | 2,574,000 | $ 1,788,000 | $ 413,000 | |||||||||||||||||
| Treasury Stock Line Items | ||||||||||||||||||||||||||||
| Stock Repurchase Prgram Authorized Amount | $ 100,000,000 | $ 100,000,000 | ||||||||||||||||||||||||||
| Shares repurchased during period | 932,600 | |||||||||||||||||||||||||||
| Average Cost per share of Acquired Treasury Shares | $ 11.45 | |||||||||||||||||||||||||||
| ESPP [Member] | ||||||||||||||||||||||||||||
| Dividends And Shares Activitiy [Line Items] | ||||||||||||||||||||||||||||
| Stock Issued During Period Shares Employee Stock Purchase Plans | 15,000 | 32,000 | 0 | |||||||||||||||||||||||||
| Total Non cash compensation expense recognized | $ 32,000 | $ 67,000 | $ 0 | |||||||||||||||||||||||||