Stockholders' Equity	12 Months Ended
Dec. 31, 2018
Equity [Abstract]
Stockholders' Equity	Stockholders' Equity. Prior to April 2016, the Company had two classes of stock outstanding - the Common Stock and the Class B Common Stock. On January 26, 2016, the Company entered into an Exchange Agreement with the holders of Class B Common Stock relating to the exchange of 1,050,012 Class B Common Stock shares, representing all outstanding Class B Common Stock, for 1,050,012 shares of Common Stock plus $12.0 million in aggregate cash. On April 27, 2016, the Company's stockholders approved the Exchange Agreement and the related amendments to the Company's by-laws and certificate of incorporation and entered into a Registration Rights Agreement with the holders of the Class B Common Stock. On the same date after the stockholders' approval, the Company issued 1,050,012 shares of Common Stock plus $12.0 million cash in exchange for the retirement of the outstanding 1,050,012 Class B Common Stock shares. In accordance with U.S. GAAP, the $12.0 million cash payment was recorded as a reduction to retained earnings, similar to dividends on preferred stock (refer to Note 14). In 2018, the Company adopted ASU 2018-02 and ASU 2016-01 which resulted in a reclassification of $1.0 million of net tax expense and $4.6 million of net unrealized investment gains, respectively, from AOCI to retained earnings (refer to Note 1-Q for details). In 2016, the Company adopted ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, which simplified several aspects of the accounting for share-based transactions. The new guidance requires, among others, excess tax benefits and tax deficiencies to be recorded in the statement of income and comprehensive income when the awards vest or are settled. Using the modified retrospective method of adoption, the Company recognized a cumulative effect adjustment at January 1, 2016 and reclassified the remaining $0.6 million of unrecognized excess tax benefits from additional paid-in capital to retained earnings in the 2016 statement of equity. At December 31, 2018 and 2017, there were 145,820 shares of Common Stock held by a subsidiary of the Company which are included in the treasury stock reported in the consolidated balance sheets.

Stockholders' Equity. Prior to April 2016, the Company had two classes of stock outstanding - the Common Stock and the Class B Common Stock. On January 26, 2016, the Company entered into an Exchange Agreement with the holders of Class B Common Stock relating to the exchange of 1,050,012 Class B Common Stock shares, representing all outstanding Class B Common Stock, for 1,050,012 shares of Common Stock plus $12.0 million in aggregate cash. On April 27, 2016, the Company's stockholders approved the Exchange Agreement and the related amendments to the Company's by-laws and certificate of incorporation and entered into a Registration Rights Agreement with the holders of the Class B Common Stock. On the same date after the stockholders' approval, the Company issued 1,050,012 shares of Common Stock plus $12.0 million cash in exchange for the retirement of the outstanding 1,050,012 Class B Common Stock shares. In accordance with U.S. GAAP, the $12.0 million cash payment was recorded as a reduction to retained earnings, similar to dividends on preferred stock (refer to Note 14).

In 2018, the Company adopted ASU 2018-02 and ASU 2016-01 which resulted in a reclassification of $1.0 million of net tax expense and $4.6 million of net unrealized investment gains, respectively, from AOCI to retained earnings (refer to Note 1-Q for details).

In 2016, the Company adopted ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, which simplified several aspects of the accounting for share-based transactions. The new guidance requires, among others, excess tax benefits and tax deficiencies to be recorded in the statement of income and comprehensive income when the awards vest or are settled. Using the modified retrospective method of adoption, the Company recognized a cumulative effect adjustment at January 1, 2016 and reclassified the remaining $0.6 million of unrecognized excess tax benefits from additional paid-in capital to retained earnings in the 2016 statement of equity.

At December 31, 2018 and 2017, there were 145,820 shares of Common Stock held by a subsidiary of the Company which are included in the treasury stock reported in the consolidated balance sheets.