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Investments | 12 Months Ended
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Dec. 31, 2016
Investments [Abstract] |
Investments | Note 2. Investments ﻿ The cost and estimated fair value of the investments are as follows: ﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  | Gross |  | Gross |  | Fair
﻿ |  |  |  |  | unrealized |  | unrealized |  | value
﻿ |  | Cost |  | gain |  | loss |  |
﻿December 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |
﻿Commercial Paper |  | $ | 348 |  | $ | 0 |  | $ | 0 |  | $ | 348
﻿Treasury Bills |  |  | 7,419 |  |  | 8 |  |  | 0 |  |  | 7,427
﻿Equity Securities |  |  | 54 |  |  | 0 |  |  | (54) |  |  | 0
﻿ |  |  | 7,821 |  |  | 8 |  |  | (54) |  |  | 7,775
﻿Less Cash Equivalents |  |  | 348 |  |  | 0 |  |  | 0 |  |  | 348
﻿Total Investments, December 31, 2016 |  | $ | 7,473 |  | $ | 8 |  | $ | (54) |  | $ | 7,427
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |
﻿Money Market Funds |  | $ | 246 |  | $ | 0 |  | $ | 0 |  | $ | 246
﻿Commercial Paper |  |  | 247 |  |  | 0 |  |  | 0 |  |  | 247
﻿Treasury Bills |  |  | 7,872 |  |  | 0 |  |  | 0 |  |  | 7,872
﻿Equity Securities |  |  | 54 |  |  | 0 |  |  | (54) |  |  | 0
﻿ |  |  | 8,419 |  |  | 0 |  |  | (54) |  |  | 8,365
﻿Less Cash Equivalents |  |  | 493 |  |  | 0 |  |  | 0 |  |  | 493
﻿Total Investments, December 31, 2015 |  | $ | 7,926 |  | $ | 0 |  | $ | (54) |  | $ | 7,872
﻿ ﻿ Realized gains and losses on investments are as follows: ﻿ ﻿
﻿ |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |
﻿ |  | Years Ended December 31,
﻿ |  | 2016 |  |  | 2015
﻿ |  |  |  |  |  |  |
﻿Gross Realized Gains |  | $ | 0 |  |  | $ | 1,449
﻿Gross Realized Losses |  |  | 0 |  |  |  | 0
﻿Net Realized Gain |  | $ | 0 |  |  | $ | 1,449
﻿ ﻿ ﻿ During fiscal 2015, the Company sold 1 22,649 shares of Rudolph Technologies, Inc. (ticker symbol RTEC) stock and reported a gain of $1,447 in other income. ﻿ Changes in Accumulated Other Comprehensive Income (Loss) ﻿ Changes in Accumulated Other Comprehensive Income (Loss) are as follows: ﻿ ﻿ ﻿
﻿ |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |
﻿ |  | December 31,
﻿ |  | 2016 |  |  | 2015
﻿ |  |  |  |  |  |  |
﻿Unrealized Gains (Losses) |  |  |  |  |  |  |
﻿Unrealized holding gains arising during the period |  | $ | 8 |  |  | $ | 211
﻿Less: Reclassification of gains included in net income |  |  | 0 |  |  |  | (1,449)
﻿ |  |  | 8 |  |  |  | (1,238)
﻿ |  |  |  |  |  |  |
﻿Deferred Taxes on Unrealized Gains (Losses): |  |  |  |  |  |  |
﻿Increase in deferred taxes on unrealized gains arising during the period |  |  | 4 |  |  |  | 80
﻿Less: Reclassification of taxes on gains included in net income |  |  | 0 |  |  |  | (551)
﻿ |  |  | 4 |  |  |  | (471)
﻿ |  |  |  |  |  |  |
﻿Net Change in Accumulated Other Comprehensive Income (Loss) |  | $ | 4 |  |  | $ | (767)
﻿

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