Interim Financial Data (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Summary of Interim Financial Data

	2017
	First Quarter		Second Quarter			Third Quarter		Fourth Quarter
Net premiums earned	$	169,156,147	$	175,014,872		$	177,283,816	$	181,059,920
Total revenues		178,970,963		183,580,716			185,716,027		190,758,831
Net losses and loss expenses		114,433,458		128,005,914			114,386,379		130,442,303
Net income (loss)		5,104,818		(2,318,648	)		7,108,574		(2,778,644	)
Net earnings (loss) per common share:
Class A common stock - basic		0.19		(0.09	)		0.27		(0.10	)
Class A common stock - diluted		0.18		(0.08	)		0.26		(0.10	)
Class B common stock - basic and diluted		0.17		(0.08	)		0.24		(0.11	)

	2016
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Net premiums earned	$	158,475,279	$	161,942,637	$	166,809,851	$	168,977,030
Total revenues		166,068,776		169,846,867		175,311,263		177,196,114
Net losses and loss expenses		95,578,065		103,193,915		111,174,963		113,368,960
Net income		11,848,913		8,584,654		4,813,404		5,554,166
Net earnings per common share:
Class A common stock - basic		0.46		0.33		0.19		0.21
Class A common stock - diluted		0.46		0.32		0.18		0.20
Class B common stock - basic and diluted		0.42		0.30		0.16		0.18