Unaudited Selected Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Selected quarterly financial data

Selected quarterly financial data is presented below.

($ in thousands, except per share data)	Three Months Ended
	December 31,		September 30,		June 30,		March 31,
2020
Insurance premiums and contract charges earned	$	233,648	$	235,353	$	225,431	$	236,265
Insurance premiums written and contract deposits (2)(3)	332,559		368,853		329,169		328,758
Total revenues	352,344		337,080		314,459		306,558
Net income	47,791		36,474		30,578		18,472
Per share information
Basic
Net income	$	1.14	$	0.87	$	0.73	$	0.44
Shares of common stock - weighted average (4)	41,962		41,916		41,879		41,827
Diluted
Net income	$	1.13	$	0.87	$	0.73	$	0.44
Shares of common stock and equivalent shares - weighted average (4)	42,156		42,058		41,996		42,019
2019
Insurance premiums and contract charges earned (1)	$	240,392	$	239,681	$	208,096	$	209,785
Insurance premiums written and contract deposits (1)(2)(3)	346,242		371,216		311,691		295,394
Total revenues (1)	331,376		334,418		451,478		313,213
Net income (1)	33,001		25,454		93,822		32,166
Per share information
Basic
Net income (1)	$	0.79	$	0.61	$	2.25	$	0.77
Shares of common stock - weighted average (4)	41,814		41,785		41,762		41,610
Diluted
Net income (1)	$	0.78	$	0.60	$	2.24	$	0.77
Shares of common stock and equivalent shares - weighted average (4)	42,093		42,030		41,921		41,785
2018
Insurance premiums and contract charges earned	$	201,905	$	206,820	$	205,610	$	202,998
Insurance premiums written and contract deposits (2)	311,216		338,097		301,722		284,008
Total revenues	278,535		311,318		306,257		295,489
Net income	(20,257)		12,528		5,917		20,155
Per share information
Basic
Net income (loss)	$	(0.49)	$	0.30	$	0.14	$	0.49
Shares of common stock - weighted average (4)	41,596		41,683		41,600		41,497
Diluted
Net income (loss)	$	(0.49)	$	0.30	$	0.14	$	0.48
Shares of common stock and equivalent shares - weighted average (4)	41,911		41,850		41,735		41,653

(1)    NTA was acquired on July 1, 2019.

(2)    This measure is not based on accounting principles generally accepted in the United States of America (non-GAAP). An explanation of this measure is contained in the Glossary of Selected Terms included as an exhibit in the Company's reports filed with the SEC.

(3)    Excludes the annuity reinsurance transaction accounted for under the deposit method that is discussed in Note 5.

(4)    Rounded to thousands.