Investments (Available-for-Sale Securities) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 78,233	$ 74,869
Gross Unrealized Gains	8,028	7,193
Gross Unrealized Losses	673	636
Fair Value	85,588	81,426
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	34,097	31,387
Gross Unrealized Gains	2,604	2,430
Gross Unrealized Losses	86	80
Fair Value	36,615	33,737
Trust Preferred Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	538	537
Gross Unrealized Gains	52	50
Gross Unrealized Losses	0	0
Fair Value	590	587
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	8,619	8,595
Gross Unrealized Gains	141	175
Gross Unrealized Losses	117	85
Fair Value	8,643	8,685
Private Label Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	6,828	7,679
Gross Unrealized Gains	321	294
Gross Unrealized Losses	0	9
Fair Value	7,149	7,964
US States and Political Subdivisions Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	17,024	16,160
Gross Unrealized Gains	1,369	1,359
Gross Unrealized Losses	14	3
Fair Value	18,379	17,516
US Treasury Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	7,937	7,320
Gross Unrealized Gains	460	487
Gross Unrealized Losses	14	2
Fair Value	8,383	7,805
Available-for-sale Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	75,043	71,678
Gross Unrealized Gains	4,947	4,795
Gross Unrealized Losses	231	179
Fair Value	79,759	76,294
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,190	3,191
Gross Unrealized Gains	3,081	2,398
Gross Unrealized Losses	442	457
Fair Value	$ 5,829	$ 5,132

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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- Definition

This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

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