XML 49 R30.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Stock Based Compensation (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary of stock options activity | ummary of Stock Option Activity:
|  | Year Ended December 31, 2012
|  | Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life |  | Aggregate Intrinsic Value
|  |  |  |  |  |  |  | (In thousands)
Options outstanding at beginning of year |  | 897,767 |  |  | $ | 23.56 |  |  |  |  |
Granted |  | — |  |  | N/A |  |  |  |  |
Exercised |  | (282,082 | ) |  | $ | 15.12 |  |  |  |  |
Cancelled |  | (6,100 | ) |  | $ | 25.73 |  |  |  |  |
Outstanding at end of year |  | 609,585 |  |  | $ | 27.44 |  |  | 1.87 |  | $ | 7,376 |
Vested and expected to vest at end of year |  | 608,405 |  |  | $ | 27.47 |  |  | 1.87 |  | $ | 7,350 |
Exercisable at end of year |  | 471,760 |  |  | $ | 30.93 |  |  | 1.63 |  | $ | 4,363 |
Price range of options exercised |  | $ 8.06 - $34.30 |  |  |  |  |  |  |
Price range of options outstanding |  | $8.06 - $44.44 |  |  |  |  |  |  |
Total shares reserved for existing or future grants at end of year |  | 1,997,382 |  |  |  |  |  |  |
|  | Years Ended December 31,
|  | 2011 |  | 2010
|  | Options |  | Weighted Average Exercise Price |  | Options |  | Weighted Average Exercise Price
Options outstanding at beginning of year: |  | 1,332,767 |  |  | $ | 23.80 |  |  | 1,620,167 |  |  | $ | 23.19 |
Granted |  | — |  |  | N/A |  |  | — |  |  | N/A |
Exercised |  | (171,800 | ) |  | $ | 15.21 |  |  | (133,400 | ) |  | $ | 15.46 |
Cancelled |  | (263,200 | ) |  | $ | 30.24 |  |  | (154,000 | ) |  | $ | 24.58 |
Outstanding at end of year |  | 897,767 |  |  | $ | 23.56 |  |  | 1,332,767 |  |  | $ | 23.80 |
Exercisable at end of year |  | 550,359 |  |  | $ | 26.29 |  |  | 740,376 |  |  | $ | 26.79 |
Price range of options exercised |  | $ 8.06 - $21.10 |  |  |  |  | $ 8.06 - $21.10 |  |  |
Price range of options outstanding |  | $ 8.06 - $44.44 |  |  |  |  | $ 8.06 - $44.44 |  |  |
Stock options by exercise price range | Stock options Outstanding at December 31, 2012:
|  | Stock Options Outstanding |  | Stock Options Exercisable
Range of Exercise Prices |  | Number Outstanding |  | Weighted Average Contractual Life |  | Weighted Average Exercise Price |  | Number Exercisable |  | Weighted Average Exercise Price
$8.06 - $15.98 |  | 209,768 |  |  | 2.38 |  | $ | 14.81 |  |  | 109,261 |  |  | $ | 15.80 |
$17.98 - $19.80 |  | 2,350 |  |  | 3.12 |  | $ | 18.87 |  |  | — |  |  | $ | — |
$19.90 - $19.90 |  | 139,840 |  |  | 2.38 |  | $ | 19.90 |  |  | 111,872 |  |  | $ | 19.90 |
$21.10 - $40.55 |  | 15,800 |  |  | 2.63 |  | $ | 27.77 |  |  | 8,800 |  |  | $ | 32.33 |
$42.82 - $44.44 |  | 241,827 |  |  | 1.08 |  | $ | 42.83 |  |  | 241,827 |  |  | $ | 42.83 |
|  | 609,585 |  |  |  |  |  |  | 471,760 |  |  |
Summary of nonvested (restricted) shares activity | Summary of Nonvested (Restricted) Shares Activity: In addition to the stock options discussed previously, we grant time-based and performance-based restricted shares. Performance-based restricted shares are only granted to our senior executive management group. All performance shares only vest upon the attainment of certain financial and operational criteria as established and approved by our Board of Directors.
|  | Nonvested Restricted Share Activity (time-based) |  | Weighted Average Grant Date Fair Value |  | Nonvested Restricted Share Activity (performance- Based) |  | Weighted Average Grant Date Fair Value
Outstanding at 1/1/10 |  | 305,279 |  |  | $ | 19.11 |  |  | 202,500 |  |  | $ | 14.27 |
Granted |  | 315,000 |  |  | $ | 21.30 |  |  | 67,500 |  |  | $ | 22.18 |
Vested (Earned/Released) |  | (118,278 | ) |  | $ | 24.75 |  |  | (67,500 | ) |  | $ | 14.27 |
Forfeited (1) |  | (36,750 | ) |  | $ | 20.99 |  |  | — |  |  | N/A |
Outstanding as of 12/31/10 |  | 465,251 |  |  | $ | 19.01 |  |  | 202,500 |  |  | $ | 16.91 |
Granted |  | 357,000 |  |  | $ | 25.57 |  |  | 56,250 |  |  | $ | 25.65 |
Vested (Earned/Released) |  | (141,335 | ) |  | $ | 17.76 |  |  | (33,750 | ) |  | $ | 14.27 |
Forfeited (1) |  | (31,400 | ) |  | $ | 23.23 |  |  | (33,750 | ) |  | $ | 14.27 |
Outstanding at 12/31/11 |  | 649,516 |  |  | $ | 22.68 |  |  | 191,250 |  |  | $ | 20.41 |
Granted |  | 386,500 |  |  | $ | 27.21 |  |  | 56,250 |  |  | $ | 20.72 |
Vested (Earned/Released) |  | (166,566 | ) |  | $ | 18.92 |  |  | (33,750 | ) |  | $ | 14.27 |
Forfeited (1) |  | (43,800 | ) |  | $ | 25.10 |  |  | (33,750 | ) |  | $ | 14.27 |
Outstanding at 12/31/12 |  | 825,650 |  |  | $ | 25.43 |  |  | 180,000 |  |  | $ | 22.81 |
(1) | Forfeitures on time-based nonvested shares are a result of terminations of employment, while forfeitures on performance-based nonvested shares are a result of failing to attain certain goals as outlined in our executive management group's compensation agreements.
Summary of compensation expense and stock award activity |
|  | Years Ended December 31,
|  | 2012 |  | 2011 |  | 2010
Stock-based compensation expense |  | $ | 8,319 |  |  | $ | 7,410 |  |  | $ | 5,358 |
Cash received by Company from exercises |  | $ | 4,267 |  |  | $ | 2,613 |  |  | $ | 2,062 |
Summary of stock based compensation agreements |
|  | As of
|  | December 31, 2012 |  | December 31, 2011
Unrecognized stock-based compensation cost |  | $ | 13,072 |  |  | $ | 9,058 |
Weighted average years remaining vesting period |  | 2.17 |  |  | 2.05 |
Total equity awards outstanding (1) |  | 1,615 |  |  | 1,739 |
(1) Includes vested and unvested options outstanding and unvested restricted stock awards.

X
- Definition Schedule of Stock-based Compensation Expense and Cash Proceeds Received from Share-based Payment Awards [Table Text Block] + References No definition available. + Details
Name: | mth_ScheduleOfStockBasedCompensationExpenseAndCashProceedsReceivedFromShareBasedPaymentAwardsTableTextBlock
Namespace Prefix: | mth_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
Name: | us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the total compensation cost related to nonvested awards not yet recognized and the weighted-average period over which it is expected to be recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfUnrecognizedCompensationCostNonvestedAwardsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration