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Summary of Significant Accounting and Reporting Policies (Tables) | 12 Months Ended
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Dec. 31, 2013
Accounting Policies [Abstract] |
Schedule of Allowance For Doubtful Accounts | The following table presents the activity in the Company’s allowance for doubtful accounts:
| Beginning Balance |  | Net Additions/ (Reductions) to Costs and Expenses |  | Deductions and Other Adjustments |  | Ending Balance
Year Ended December 31, 2013: |  |  |  |  |  |  |
Allowance for Doubtful Accounts | $ | 3,400,000 |  |  | $ | — |  |  | $ | 197,612 |  |  | $ | 3,202,388 |
Year Ended December 31, 2012: |  |  |  |  |  |  |
Allowance for Doubtful Accounts | $ | 3,400,000 |  |  | $ | (577 | ) |  | 577* |  |  | $ | 3,400,000 |
Year Ended December 31, 2011: |  |  |  |  |  |  |
Allowance for Doubtful Accounts | $ | 4,300,000 |  |  | $ | (802,929 | ) |  | $ | (97,071 | )* |  | $ | 3,400,000 |
*Represents excess recoveries and other adjustments over accounts written off.
Schedule of Assets or Liabilities Having Recurring Measurements | Assets or liabilities that have recurring fair value measurements are shown below as of December 31, 2013 and December 31, 2012:
|  |  | Fair Value Measurements at Reporting Date Using
| Total as of |  | Quoted Prices in Active Markets for Identical Assets |  | Significant Other Observable Inputs |  | Significant Unobservable Inputs
Description | December 31, 2013 |  | (Level I) |  | (Level 2) |  | (Level 3)
Cash & Cash Equivalents | $ | 309,591,724 |  |  | $ | 309,591,724 |  |  | $ | — |  |  | $ | — |
Long-Term Investments: |  |  |  |  |  |  |
Common Stocks | 33,282,439 |  |  | 33,282,439 |  |  | — |  |  | — |
Mutual Funds – Equity | 73,723,083 |  |  | 73,723,083 |  |  | — |  |  | — |
Total | $ | 416,597,246 |  |  | $ | 416,597,246 |  |  | $ | — |  |  | $ | — |
|  |  | Fair Value Measurements at Reporting Date Using
| Total as of |  | Quoted Prices in Active Markets for Identical Assets |  | Significant Other Observable Inputs |  | Significant Unobservable Inputs
Description | December 31, 2012 |  | (Level I) |  | (Level 2) |  | (Level 3)
Cash & Cash Equivalents | $ | 389,678,664 |  |  | $ | 389,678,664 |  |  | $ | — |  |  | $ | — |
Short-Term Investments: |  |  |  |  |  |  |
Certificate of Deposit | 510,881 |  |  | — |  |  | 510,881 |  |  | — |
Government Securities | 38,522,471 |  |  | — |  |  | 38,522,471 |  |  | — |
U.S. Treasury Notes | 15,020,350 |  |  | — |  |  | 15,020,350 |  |  | — |
Corporate Bonds | 6,563,228 |  |  | — |  |  | 6,563,228 |  |  | — |
Other | 185,926 |  |  | 185,926 |  |  | — |  |  | — |
Long-Term Investments: |  |  |  |  |  |  |
Corporate Bonds | 2,180,780 |  |  | — |  |  | 2,180,780 |  |  | — |
Common Stocks | 53,283,201 |  |  | 53,283,201 |  |  | — |  |  | — |
Mutual Funds – Equity | 86,109,053 |  |  | 86,109,053 |  |  | — |  |  | — |
Other – Equity | 261,000 |  |  | 261,000 |  |  | — |  |  | — |
Total | $ | 592,315,554 |  |  | $ | 529,517,844 |  |  | $ | 62,797,710 |  |  | $ | — |
Schedule of Amortized Cost, Unrealized Gains And Losses, And Market Value of Investment Securities | The amortized cost, unrealized gains and losses, and market value of investment securities are shown as of December 31, 2013 and 2012:
| Unrealized
2013 | Cost |  | Gains |  | Losses |  | Market Value
Long-Term Investments: |  |  |  |  |  |  |
Common Stocks | 22,799,035 |  |  | 10,532,007 |  |  | (48,603 | ) |  | 33,282,439 |
Mutual Funds-Equity | 54,256,577 |  |  | 19,466,506 |  |  | — |  |  | 73,723,083 |
Total | $ | 77,055,612 |  |  | $ | 29,998,513 |  | — |  | $ | (48,603 | ) | — |  | $ | 107,005,522 |
| Unrealized
2012 | Cost |  | Gains |  | Losses |  | Market Value
Short-Term Investments: |  |  |  |  |  |  |
Certificate of Deposit | $ | 510,881 |  |  | $ | — |  |  | $ | — |  |  | $ | 510,881 |
Government Securities | $ | 38,514,411 |  |  | $ | 9,004 |  |  | $ | (944 | ) |  | $ | 38,522,471 |
U.S. Treasury Notes | 15,018,810 |  |  | 2,602 |  |  | (1,062 | ) |  | 15,020,350 |
Corporate Bonds | 6,529,758 |  |  | 33,470 |  |  | — |  |  | 6,563,228 |
Other | 185,926 |  |  | — |  |  | — |  |  | 185,926 |
Long-Term Investments: |  |  |  |  |  |  |
Corporate Bonds | 2,174,948 |  |  | 5,832 |  |  | — |  |  | 2,180,780 |
Common Stocks | 40,893,121 |  |  | 12,781,501 |  |  | (391,421 | ) |  | 53,283,201 |
Mutual Funds-Equity | 75,321,640 |  |  | 11,082,714 |  |  | (295,301 | ) |  | 86,109,053 |
Other-Equity | 238,506 |  |  | 22,494 |  |  | — |  |  | 261,000 |
Total | $ | 179,388,001 |  |  | $ | 23,937,617 |  |  | (688,728 | ) |  | $ | 202,636,890 |
Schedule of Unrealized Losses on Investments | Unrealized losses on investments as of December 31, 2013 are as follows:
| Aggregate Unrealized Losses |  | Aggregate Fair Value
Less than one year | $ | 48,603 |  |  | $ | 1,886,080 |
Unrealized losses on investments as of December 31, 2012 are as follows:
| Aggregate Unrealized Losses |  | Aggregate Fair Value
Less than one year | $ | 688,728 |  |  | $ | 22,887,686 |
Schedule of Inventories | Inventories consisted of the following as of December 31, 2013 and 2012.
| 2013 |  | 2012
Raw materials | $ | 75,081,810 |  |  | $ | 114,750,525 |
Work-in-process | 21,409,976 |  |  | 24,588,734 |
Finished goods | 23,582,378 |  |  | 20,591,007 |
Total Inventory | $ | 120,074,164 |  |  | $ | 159,930,266 |
Schedule of Earnings Per Share Basic and Diluted | The following table reconciles the numerators and denominators used in the calculations of basic and diluted earnings per share (EPS) for each of the last three years:
| 2013 |  | 2012 |  | 2011
Numerators: |  |  |  |  |
Numerator for both basic and diluted EPS, net income | $ | 222,929,949 |  |  | $ | 168,586,840 |  |  | $ | 164,668,228 |
Denominators: |  |  |  |  |
Denominator for basic EPS, weighted-average common shares outstanding | 143,460,018 |  |  | 143,097,530 |  |  | 142,492,699 |
Potentially dilutive shares resulting from stock option plans | 814,153 |  |  | 870,501 |  |  | 1,784,109 |
Denominator for diluted EPS | 144,274,171 |  |  | 143,968,031 |  |  | 144,276,808 |

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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19190-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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