Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Summary of Significant Accounting Policies [Line Items]

Analysis of deferred acquisition costs

	Years ended December 31,
	2012			2011			2010
	(dollars in thousands)
Balance, beginning of period	$	24,421		$	22,142		$	16,228
Acquisition costs deferred, net		60,340			54,359			49,399
Costs amortized during the period		(58,579	)		(52,080	)		(43,485	)
Balance, end of period	$	26,182		$	24,421		$	22,142

Earnings per share

	2012		2011		2010
Weighted average shares outstanding		10,073,304		10,393,766		10,302,525
Shares attributable to stock options and restricted stock		309,583		345,408		343,579
Weighted average shares attributable to stock options and restricted stock		10,382,887		10,739,174		10,646,104
Net earnings per share:
Basic	$	1.18	$	1.04	$	2.96
Diluted	$	1.14	$	1.01	$	2.87

Bluestone [Member]

Summary of Significant Accounting Policies [Line Items]

Summary of fair value of assets acquired identifiable intangible assets acquired and liabilities assumed

Assets:
Short-term investments, at fair value	$	3,541
Cash and cash equivalents		3,176
Premiums receivable		2,698
Deferred acquisition costs		1,186
Goodwill		11,526
Intangibles and other assets		9,784
Total Assets	$	31,911
Liabilities:
Unpaid losses and loss adjustment expenses	$	(2,135	)
Unearned premiums		(2,358	)
Ceded premiums payable		(1,797	)
Funds held		(3,504	)
Other Liablilities		(1,057	)
Deferred income taxes		(3,060	)
Total Liabilities	$	(13,911	)