Fair Values Of Financial Instruments (Fair Value, Assets Measured On Recurring Basis) (Details) $ in Thousands | Mar. 31, 2016USD ($) |
Cash and Cash Equivalents [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Cash and cash equivalents | $ 7,415 |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Cash and cash equivalents | $ 7,415 |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Cash and cash equivalents | |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Cash and cash equivalents | |
Cash [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Cash and cash equivalents | $ 6,928 |
Cash [Member] | Fair Value, Inputs, Level 1 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Cash and cash equivalents | $ 6,928 |
Cash [Member] | Fair Value, Inputs, Level 2 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Cash and cash equivalents | |
Cash [Member] | Fair Value, Inputs, Level 3 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Cash and cash equivalents | |
Money Market Funds [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Cash and cash equivalents | $ 487 |
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Cash and cash equivalents | $ 487 |
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Cash and cash equivalents | |
Money Market Funds [Member] | Fair Value, Inputs, Level 3 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Cash and cash equivalents | |
Fixed Income Securities [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | $ 19,870 |
Fixed Income Securities [Member] | Fair Value, Inputs, Level 1 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | |
Fixed Income Securities [Member] | Fair Value, Inputs, Level 2 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | $ 19,870 |
Fixed Income Securities [Member] | Fair Value, Inputs, Level 3 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | |
Certificates of Deposit [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | $ 9,084 |
Certificates of Deposit [Member] | Fair Value, Inputs, Level 1 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | |
Certificates of Deposit [Member] | Fair Value, Inputs, Level 2 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | $ 9,084 |
Certificates of Deposit [Member] | Fair Value, Inputs, Level 3 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | |
Corporate Bonds - Financial [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | $ 2,213 |
Corporate Bonds - Financial [Member] | Fair Value, Inputs, Level 1 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | |
Corporate Bonds - Financial [Member] | Fair Value, Inputs, Level 2 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | $ 2,213 |
Corporate Bonds - Financial [Member] | Fair Value, Inputs, Level 3 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | |
Corporate Bonds - Industrial [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | $ 2,598 |
Corporate Bonds - Industrial [Member] | Fair Value, Inputs, Level 1 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | |
Corporate Bonds - Industrial [Member] | Fair Value, Inputs, Level 2 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | $ 2,598 |
Corporate Bonds - Industrial [Member] | Fair Value, Inputs, Level 3 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | |
US Treasury Securities [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | $ 5,975 |
US Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | |
US Treasury Securities [Member] | Fair Value, Inputs, Level 2 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | $ 5,975 |
US Treasury Securities [Member] | Fair Value, Inputs, Level 3 [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fixed income securities | |