Consolidated Statement of Stockholders' Equity - 6 months ended Jun. 30, 2017 - USD ($) shares in Thousands, $ in Thousands		Total		Common Stock		Additional Paid-in Capital	Treasury Stock		Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2016		$ 1,178,188	[1]	$ 3,612		$ 373,983	$ (155,801)		$ 947,519	$ 8,875
Beginning balance (in shares) at Dec. 31, 2016		36,147		36,147	[2]		7,023	[2]
Net Income		$ 41,612							41,612
Dividends Declared		(3,092)							(3,092)
Changes in Comprehensive Income:
Change in Net Unrealized Gain on Investments		29,060								29,060
Change in Net Non-Credit Other-Than- Temporary Impairment Losses		418								418
Change in Foreign Currency Translation Gain		520								520
Total Comprehensive Income		29,998								29,998
Shares Issued	[3]	(11,684)		$ 35		(11,719)
Shares issued (in shares)	[2],[3]			351
Share-Based Compensation		9,146				9,146
Ending balance at Jun. 30, 2017		$ 1,244,168	[1]	$ 3,647		$ 371,410	$ (155,801)		$ 986,039	$ 38,873
Ending balance (in shares) at Jun. 30, 2017		36,498		36,498	[2]		7,023	[2]

[1] We completed a two-for-one stock split on January 20, 2017. All share and per share data prior to January 20, 2017 has been retroactively restated on a post-split basis.

[2] We completed a two-for-one stock split on January 20, 2017. All share data prior to January 20, 2017 has been retroactively restated on a post-split basis.

[3] Includes shares issued under the Second Amended and Restated 2005 Stock Incentive Plan to Directors and the Employee Stock Purchase Plan.