Investments - Schedule of Maturities (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Less than 1 year, Cost	$ 6,888
Mature in 1 - 2 years, Cost	6,580
Mature in 3 - 5 years, Cost	529
Mature after 5 years, Cost	1,233
Cost, Total	15,230
Less than 1 year, Fair Value	7,024
Mature in 1 - 2 years, Fair Value	6,618
Mature in 3 - 5 years, Fair Value	542
Mature after 5 years, Fair Value	1,355
Fair Value, Total	$ 15,539

Available-for-sale securities, debt maturities, after five years, amortized cost.

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- Definition

Available-for-sale securities, debt maturities, after five years, fair value.

+ References

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- Definition

Available-for-sale securities, debt maturities, one to two years, amortized cost.

+ References

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Available-for-sale securities, debt maturities, one to two years, fair value.

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- Definition

Available-for-sale securities, debt maturities, three to five years, amortized cost.

+ References

No definition available.

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- Definition

Available-for-sale securities, debt maturities, three to five years, fair value.

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No definition available.

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- Definition

Amount of available-for-sale debt securities at cost, net of adjustments, which include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (aa)

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- Definition

Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the next fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)

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- Definition

Amount of available-for-sale debt securities at fair value maturing in the next fiscal year following the latest fiscal year.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

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-Paragraph 3

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-Name Accounting Standards Codification

-Topic 942

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-Section 50

-Paragraph 3

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-URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803

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-Name Accounting Standards Codification

-Topic 320

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-Section 50

-Paragraph 2

-Subparagraph (d)

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- Definition

Amount of debt securities categorized neither as held-to-maturity nor trading.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

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-Section 45

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-Name Accounting Standards Codification

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-Subparagraph (aa)

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-Publisher FASB

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-Topic 942

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-Paragraph 2

-Subparagraph (b)-(g)

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